GROUP

MODEL

ELE

2025MY
K4 (CL4)

NUMBER

DATE

390

June 2025

TECHNICAL SERVICE BULLETIN
SERVICE ACTION: SUNROOF OPERATION

SUBJECT:

LOGIC IMPROVEMENT (SA620)

This bulletin supersedes TSB SA595 (December 2024) and outlines the procedure to update the Roof Control
Module (RCM) software on certain 2025MY K4 (CL4) vehicles produced between September 19, 2024, through
May 28, 2025, which may experience inoperative sunroof operation (open/close) due to a software logic error.
The updated software includes improved logic to address this issue. To apply the update, verify that the
vehicle is within the affected VIN range and follow the steps detailed in this bulletin using the KDS ECU
Upgrade function.
This software upgrade may also be available via an Over-the-Air (OTA) update on vehicles with an ‘active’ Kia
Connect subscription.

 NOTICE
A Service Action is a repair program without customer notification that is performed during the
warranty period. Any dealer requesting to perform this repair outside the warranty period will
require DPSM approval.
Repair status for a VIN is provided on KDealer+ (Service → Warranty Coverage → Warranty
Coverage Inquiry → Campaign Information). Not completed Recall / Service Action reports are
available on KDealer+ (Consumer Affairs → Not Completed Recall → Recall VIN → Select Report),
which includes a list of affected vehicles.
This issue number is SA620.
A printed copy is for reference only; publication information can be updated at any time.
Always refer to KGIS for the latest information. After logging in kdealer.com, the newest technical
publications are listed in ‘Service Releases’ and has the latest service information that has been released.

Page 2 of 5

SUNROOF OPERATION LOGIC IMPROVEMENT (SA620)

SUBJECT:

Refer to TSB SST081 for instructions to upgrade the ‘RCM’ system:
To correct this condition, the specified system module should be reprogrammed using KDS
as described in this bulletin in ‘Auto Mode’.
Upgrade Event Name
859.CL4m Sunroof operation logic improvement (Unit 2)

Connect the negative (-) terminal to the battery as shown below.


Before attempting an ECU upgrade on any Kia model, make sure to first determine whether the
applicable model is equipped with an immobilizer

security system. Failure to follow proper

procedures may cause the PCM to become inoperative after the upgrade and any claims associated
with this repair may be subject to chargeback.

Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SA620 K4 (CL4) June 2025

Page 3 of 5
SUBJECT:

SUNROOF OPERATION LOGIC IMPROVEMENT (SA620)

ROM ID Information Table:

 IMPORTANT
It is recommended to ALWAYS check the Electronic Parts Catalog (EPC) to locate the ECU Part
Number respective to Auto/Manual Mode ROM IDs. DO NOT reference the parts label affixed to
the ECU.

Upgrade Event #859 (CL4)
Event

System

IMMO

ECU P/No.

ROM ID
Previous

New

Comments

2461
RCM
#859

(Roof Control
Module)

2491
Yes

816P0 GG000

24A1

2551

UNIT #2

24A2
24B1

To verify the vehicle is affected, be sure to check the Calibration Identification of the vehicle's ECM ROM ID
and reference the Information Table as necessary.

 IMPORTANT
The software update may also be available via Over-The-Air (OTA) upgrade feature through an
‘active’ Kia Connect account for customers. An OTA software upgrade may not be available at the
time a TSB publication is released. Dealers can confirm OTA availability by checking for OTA release
notes on the Kia Owners Portal: OTA Software Update Release Notes. If the affected vehicle had
the latest software installed via OTA, no further action is required by the dealer.
Note: An OTA installed software is time-stamped for each VIN.

Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SA620 K4 (CL4) June 2025

Page 4 of 5

SUNROOF OPERATION LOGIC IMPROVEMENT (SA620)

SUBJECT:

Software Information:
The required software must be installed by selecting
the ‘Auto Mode’ ECU Upgrade option.
Note: In some case, the ‘Manual Mode’ installation
option may be required ONLY if the ‘Auto Mode’
function fails or is otherwise noted above.

 NOTICE
If the automatic upgrade fails, turn the ignition ‘OFF’ for about 10 seconds then place it back in the
‘ON’ position to reset the control unit BEFORE performing the manual upgrade.

‘Manual Mode’ passwords.
Event No.
859

Menu
CL4m RCM : 816P0-GG000 (Unit 2)

UPGRADE EVENT:
Select the applicable ‘RCM’ system module and the
Event Group.
•

859.CL4m

Sunroof

operation

logic

improvement (Unit 2))
Verify the affected vehicle Calibration Identification of
the applicable ECU ROM ID and reference the
Information Table on page 3 as necessary.

Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SA620 K4 (CL4) June 2025

Password
7910

Page 5 of 5

SUNROOF OPERATION LOGIC IMPROVEMENT (SA620)

SUBJECT:

AFFECTED VEHICLE RANGE:
Model

Production Date Range

K4 (CL4)

September 19, 2024 to May 28, 2025

REQUIRED TOOL:
Tool Name

Part Number

Kia Diagnostic System

Figure

Comments

N/A

(KDS)

KDS + VCI

WARRANTY INFORMATION:
N Code: N99 C Code: C99
Claim
Type

Causal P/N

Qty.

Repair

Labor Op

Op

Replacement

Description

Code

Time

P/N

Qty.

(SA620)
V

816P0 G000

0

Upgrading software on
the Roof Control Module

250M09R0

0.3
M/H

N/A

0

(RCM)
Note: For Substitute Transportation policy, please refer to Service Policy and Procedures Manual
(SPPM) 6.11 “Kia Substitute Transportation”.

 NOTICE
VIN inquiry data for this repair is provided for tracking purposes only. Kia retailers should reference
SA620 when accessing the KDealer+ system.

Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SA620 K4 (CL4) June 2025